A multi-centre, tolerability study of a cannabidiol-enriched Cannabis Herbal Extract for chronic headaches in adolescents: The CAN-CHA protocol. by Manik Chhabra, Evan C Lewis, Robert Balshaw, Breanne Stewart, Zina Zaslawski, Trinity Lowthian, Zahra Alidina, Melila Chesick-Gordis, Wenli Xie, Britt I Drögemöller, Galen E B Wright, Kathryn A Birnie, Katelynn E Boerner, Vivian W L Tsang, Samantha Lee Irwin, Daniela Pohl, Alexander G Weil, Erick Sell, Erika Penz, Amy Robson-MacKay, Sophia Mbabaali, Stephanie Blackman, Shanlea Gordon, Jane Alcorn, Richard J Huntsman, Tim F Oberlander, G Allen Finley, Lauren E Kelly

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